So my g'son is doing some type of paper for a school project and he calls on Grandpa (as I have a camper) for advice (actually answers). Two questions here: 1) Home many different manufacturers of RV air conditioners are there? I know of three, Dometic, Coleman, and Atwood. 2) How many RV's were manufactured in the U.S. in 2013? We tried a search under RVMA (Recreational Vehicle Manufacturer Association--direct from a tag on my TT) with no luck. Thanks

RV Shipments and Sales Data∑In February, RV manufacturers shipped 30,826 units, an increase of 11.5% from the same month last year – the largest February total in eight years. Shipments in 2014 are expected to total more than 335,000 units, which would be the highest total since 2007.∑In 2013, the RV industry shipped 321,127 units, a gain of 12.4% over the previous year. This was nearly double the total in 2009, and marked the fourth consecutive year of growth since the end of U.S. recession.∑Shipments history. In 2012, RV manufacturers shipped 285,749 units, an increase of 13.3% from 2011, and the highest total since 2007. In 2011, manufacturers shipped 252,300 units, an increase of 4.1% from 2010. 2010 shipments reached 242,300 units, an increase of 46.2% from 2009. 2009 shipments totaled 165,700 units; down 30.1% from 2008 because of the economic downturn economists have dubbed the Great Recession. Manufacturers shipped 237,000 units in 2008, down 32.9% from 2007 due to the recession.The Recreation Vehicle Industry Association: Business Indicators